ESTIA POSEIDON

Name: Rafael Sotiris Kosmas
Nationality: Greek
Position: Captain
Position details: Captain
Languages: Not specified
Description: Rafael grew up in Athens, Greece, where he developed his passion for the sea and sailing from an early age. In 2010, he began his maritime career aboard the MT Olympic Flair as an Apprentice Officer, gaining valuable experience over four seasons on tanker vessels.

In 2016, Rafael transitioned into the yachting industry, joining a 54-metre yacht as Second Officer. Over the years, he has served on various yachts in different capacities, steadily advancing his career. He holds a Class Certificate of Competency (STCW ’78) from the Merchant Marine Academy of Hydra, Ministry of Shipping.

Since obtaining his command license, Rafael has captained yachts up to 54 metres, cruising extensively throughout the Aegean, Ionian, and Adriatic Seas. Energetic, dedicated, and deeply passionate about the sea, he is committed to ensuring the highest standards of safety, professionalism, and guest satisfaction. His goal is always to provide a smooth voyage and an unforgettable charter experience.

Name: Villaret Hannibal
Nationality: Filipino
Position: Deckhand
Position details: Deckhand
Languages: Not specified
Description: Villaret holds a Bachelor of Science in Marine Transportation (2000) and has been working at sea since 2004. With 18 years of experience as a Deckhand, he has served aboard motor yachts ranging from 22 to 118 meters, gaining extensive knowledge and hands-on expertise across a wide variety of vessels.

He began his charter career with Atlanta Golden Yachts in 2009 and has remained dedicated to the yachting industry ever since. Throughout his career, he has consistently demonstrated professionalism, reliability, and a strong commitment to safety and quality standards.

Known by his nickname “Bhal,” he is a hardworking and highly valued member of the crew. Friendly, easy-going, and attentive, he is much appreciated by guests for his positive attitude and willingness to assist at all times. His team spirit and dedication make him an integral part of the 7SeasMaritime crew, contributing to a smooth and enjoyable charter experience for everyone onboard.

Name: Giannis Papasotiriou
Nationality: Greek
Position: Chief engineer
Position details: Chief Engineer
Languages: Not specified
Description: Giannis is a highly skilled Chief Engineer with over 12 years of hands-on experience in the maritime industry, including extensive service aboard luxury yachts. Holding a Class A’ Engineer’s License and supported by a strong academic and technical background, he possesses in-depth knowledge of the operation, maintenance, and troubleshooting of all onboard engineering systems.

Renowned for his methodical approach, leadership skills, and unwavering commitment to safety and efficiency, Giannis ensures smooth, reliable, and seamless technical operations throughout every voyage. He understands the importance of teamwork onboard and firmly believes that collaboration among crew members is essential to delivering a successful charter experience.

With a keen eye for detail and a proactive mindset, Giannis consistently maintains the yacht to the highest standards, contributing significantly to the comfort, safety, and overall satisfaction of guests.

Name: Georgios Kaliakatsos
Nationality: Greek
Position: Chef
Position details: Chef
Languages: Not specified
Description: hef Georgios hails from Piraeus, Greece, and discovered his passion for gastronomy around eight years ago after attending a Masterclass in Greek Mediterranean cuisine. Inspired by the quality and vibrant flavors of fresh, local produce, he continued to expand his expertise through specialized Masterclasses in Thermomix, Roner, and Siphon techniques in 2015, followed by a Sous Vide Masterclass in early 2020.

He began his culinary career at the prestigious Grand Resort Lagonissi, where he refined his skills in a high-end hospitality environment. Seeking further experience, he continued his journey at a resort in Samos before moving to Germany in 2017, where he worked for a year as Chef de Partie at Meze Academie. Upon returning to Greece, he served as Chef at a luxury resort in Mykonos.

In 2020, Chef Georgios entered the yachting industry, taking on the role of Chef aboard M/Y Alexander, followed by M/Y Tourama the following year. Since then, he has been dedicated to creating exceptional dining experiences at sea.

Chef Georgios is passionate about exceeding guest expectations and ensuring that Estia Poseidon’s guests enjoy a truly memorable culinary journey onboard. His philosophy centers on embracing fresh, local ingredients and delivering refined, high-quality cuisine tailored to each guest’s preferences.

When not in the galley, he enjoys playing football and tennis, as well as traveling and discovering new destinations — experiences that continue to inspire his culinary creativity.

Name: Nikoletta Roupaka
Nationality: Greek
Position: Chief steward/ess
Position details: Stewardess
Languages: Not specified
Description: Nikoletta Roupaka is a dedicated and experienced yachting professional with a strong background in hospitality and guest service. Having served as a stewardess on luxury yachts ranging from 27m to 46m, she has developed exceptional skills in silver service, housekeeping, mooring operations, and general vessel maintenance.

Holding essential certifications, including STCW-95 and a Greek Seaman’s Book, Nikoletta is fully prepared for the high standards and demands of the yachting industry. She is organized, self-motivated, and detail-oriented, thriving in team-oriented environments while also performing confidently in independent roles.

Her passion for delivering impeccable service, combined with her positive attitude and strong work ethic, ensures that every guest enjoys a comfortable and memorable experience onboard.

Nikoletta warmly welcomes you aboard M/Y Estia Poseidon and looks forward to contributing to an exceptional charter journey.